No, a good sign to try rattling is rubs, scrapes and an overall good doe to buck ratio. Conviction and confidence in your rattling also help a lot. Give it a try and see what happens. Having rattled in a few the last couple of years, it is a very satisfying and exciting thing to see them trot or even run into horns. That said, be ready to lay the wood down if it turns out to be a shooter you're looking for.